1
================================================================================

                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                    FORM 11-K

               [X] ANNUAL REPORT PURSUANT TO SECTION 15 (D) OF THE
                      SECURITIES AND EXCHANGE ACT OF 1934


                                                 

For the Fiscal Year Ended
December 31, 1998                                    Commission File Number (333-00289)
- -------------------------                            ----------------------------------


             ROBBINS & MYERS, INC. SAVINGS PLAN FOR UNION EMPLOYEES
                                 (Name of Plan)

                              ROBBINS & MYERS, INC.
                              1400 Kettering Tower
                               Dayton, Ohio 45423
                                 (937) 222-2610
         (Name of Issuer of Security, held pursuant to Plan and address
                       of its principal executive office)

================================================================================
   2



                              REQUIRED INFORMATION

     The Robbins & Myers,  Inc. Savings Plan for Union Employees (the "Plan") is
subject to the Employee Retirement Income Security Act of 1974.

         ITEM 4. In lieu of the requirements of Items 1, 2 and 3 of this Form
11-K, the following financial statements of the Plan, notes thereto, and Report
of Independent Auditors thereon are being filed as Exhibit 99.1 to this Report:

     (a)  Statement of Assets  Available  for Plan  Benefits - December 31, 1998
          and 1997

     (b)  Statement of Changes in Assets  Available  for Plan Benefits - for the
          year ended December 31, 1998

     (c)  Schedule of Assets Held for Investment Purposes - December 31, 1998;

     (d)  Schedule of Reportable  Transactions  for the year ended  December 31,
          1998

     (e)  Notes to Financial Statements; and

     (f)  Report of Independent Auditors.

         The consent of Independent Auditors to the incorporation by reference
of the foregoing financial statements in Registration statement on Form S-8 (No.
333-00289) is being filed as Exhibit 23.1 to this Report.

                                   SIGNATURES

         THE PLAN. Pursuant to the requirements of the Securities Exchange Act
of 1934, the persons who administer the Robbins & Myers, Inc. Savings Plan for
Union Employees have duly caused this annual report to be signed on its behalf
by the undersigned hereunto duly authorized.

                                    ROBBINS & MYERS, INC. SAVINGS
                                    PLAN FOR UNION EMPLOYEES

                                    By /s/ Stephen R. Ley
                                             Name:    Stephen R. Ley
                                             Title:   Member, Corporate Benefits

                                                      Committee
                                             Dated:   June 28, 1999


   3



                                INDEX TO EXHIBITS

         The following Exhibits are being filed with this Annual Report on Form
11-K:

EXHIBIT

(23)               CONSENT OF EXPERTS AND COUNSEL

                   23.1 Consent of Ernst & Young LLP.

(99)               ADDITIONAL EXHIBITS

                   99.1 Audited Financial Statement of Robbins & Myers, Inc.
                   Savings Plan for Union Employees for the year ended December
                   31, 1998.